A LOW POWER LDO REGULATOR WITH SMALLOUTPUT VOLTAGEVARIATIONSAND HIGH PSRR IN 0.18μm CMOS TECHNOLOGY
نویسندگان
چکیده
A low dropout voltage regulator with small output voltage variations and the ability of wide load current range support is proposed in this paper. In this LDO structure, a recycling folded cascode operational transconductance amplifier is used as an error amplifier, which has high transconductance and therefore high power efficiency. The designed LDO is simulated in 0.18 μm CMOS standard technology and has small output voltage variations about 48 mV for load current in the range of 0-150 mA. Simulation results show a favorable transient response behavior with 4.2 μs rise time and 160mV dropout voltage for current changing in the desirable range. It is shown that the LDO structure can support 0-150 mA load current range with reasonable output voltage variations. In addition, with the smaller load current ranges, the dropout voltage will be higher and the output voltage variations will be smaller.
منابع مشابه
FULL ON-CHIP CMOS LOW DROPOUT VOLTAGE REGULATOR WITH -41 dB AT 1 MHZ FOR WIRELESS APPLICATIONS
A high PSRR full on-chip and area efficient low dropout voltage regulator (LDO), exploiting the nested miller compensation technique with active capacitor (NMCAC) to eliminate the external capacitor and improve the high performance. A novel technique is used to boost the important characteristic for wireless applications regulators PSRR. The idea is applied to stabilize the Low dropout regulato...
متن کاملHigh PSRR Low Drop-out Voltage Regulator (LDO)
In order to solve the stability problems and increase the PSRR performance of the Low Drop-out Voltage (LDO) a novel technique is presented. The main purpose of this work was to obtain a high PSRR, high power efficiency with a low load current. To achieve this, several techniques such as Nested Miller Compensation (NMC), Pole-Zero Tracking Frequency Compensation (PZTFC) and Single Miller Compen...
متن کاملAnalysis and Characterization of a Programmable Low-dropout Regulator
Analysis and Characterization of a Programmable Low-dropout Regulator (April 2007) Xiaofan Qiu Department of Electrical and Computer Engineering Texas A&M University Research Advisor: Dr. Jose Silva-Martinez Department of Electrical and Computer Engineering As portable electronic devices become a part of daily life, it creates a huge market for electronic components for those battery driven dev...
متن کاملAn on-chip Low Drop-Out Voltage Regulator with 150mA Driving Capability
Transient response; Power supply rejection. Abstract—To realize DC voltage conversion from 3.3V to 1.8V for SoC application, a fully on-chip Low Drop-Out (LDO) voltage regulator with 150mA driving capability is presented. Implemented in 0.18μm CMOS technology, the proposed LDO voltage regulator utilizes paralleled input differential pairs and current amplifiers to provide fast transient respons...
متن کاملA fully on-chip LDO voltage regulator with 37 dB PSRR at 1 MHz for remotely powered biomedical implants
This article presents a fully on-chip low-power LDO voltage regulator dedicated to remotely powered wireless cortical implants. This regulator is stable over the full range of alternating load current and provides fast load regulation achieved by applying a time-domain design methodology. Moreover, a new compensation technique is proposed and implemented to improve PSRR beyond the performance l...
متن کامل